“…In such architectures, the adaptive step is chosen as tradeoff between the convergence time and the precision of the estimated coefficient which affects the SNR/SFDR performance of the calibration. Especially, for calibration architecture that operates with input occupied at any NB, it is usefully hard to choose appropriate adaptive step [9]. In this paper, we propose a technique to improve the convergence speed as well as the estimation accuracy, hence, the SNR/SFDR performance.…”